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Plasma physics

  1. Sep 30, 2013 #1
    Hello everybody.

    I have a question about generation of return current in plasma beam interaction process:

    we enter an electron beam in a plasma medium, and this electron beam generate a return current in plasma, I want to know how electron current can produce a return current in plasma?
  2. jcsd
  3. Sep 30, 2013 #2


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    2017 Award

    Staff: Mentor

    If you shoot enough electrons, the source gets positively charged and your target gets a negative charge. A potential difference in a conducting medium leads to a current flow.
    I don't think this is particle physics.
  4. Sep 30, 2013 #3


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    Science Advisor

    But it is plasma physics.
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